/Engine/Source/Runtime/Engine/Public/Net/NetworkProfiler.h
Tracks and RPC being sent.
void TrackSendRPC ( const [AActor](API\Runtime\Engine\GameFramework\AActor) * Actor, const [UFunction](API\Runtime\CoreUObject\UObject\UFunction) * Function, uint32 NumHeaderBits, uint32 NumParameterBits, uint32 NumFooterBits, [UNetConnection](API\Runtime\Engine\Engine\UNetConnection) * Connection )